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`To Zl/wfwmt't may concern y 1 Be it known `that I,\DAV`J;D RUSSELL, Ofi

f DAVID" RUSSELL, or IDnnwERsBuRe, INDIANA.

" WINDoWi-SASH surPonTER.

" l Drewersburg, in the countyof Franklin and all the figures.

Stop-Fasteners; and I do declare that the State of Indiana,have inventedcertain new and useful Improvements in Window-Sash 5 following is afull, clear, and exact descriptlon of the same, reference being had tothe 1 annexed drawings, making 1a` part of this y specication, inwhich-- framewith the sashinserted. Fig. Bis de`l J tachedyiew` of asashelevationshowing the stop fastener-sand `the arrangement for:operatingthe Same. Fig. 3 is a top View of f `the frame with thecappiece removed and the-sash inserted, showing the manner in `whichthejambs` areconstructed and also 1 y the manner in which the stoplfasteners act against the side of the groove of the jamb.

" Fig. 4 is a detached sideview of the stop i v fastener. Fig. 5 is aned e view of the same.

Similar characters re er to like parts in The nature of ;my invention,consists in a new andimproved mode `of constructing stop fasteners forwindow sash.

My invention further consists of constructing the jambs, in such amanneras to admit of the lower or front sash,"bein`g` made `wider than theupper or back one. This is accomplished by an offset in each jamb, said"offset extendingfromtheupper to the' lower extremity of the frame.

`The obj ect of constructing the jambs, with? offsets, and consequentlyrequiring theylower sash t be wider than the upper, `is to enable me (bythe application of the stop fastener injconjunction with the offsetjamb) to take or put either of the sash square from or in i the frame,without the inconvenienceof rei moving any part of thesame, also toraise i or lower either of them atpleasure and se 3 cure them in thedesiredposition, as will be hereinafter described. And further, by

` i forming an offset on thejambs, and making f1 described.

theflower sashf wider than `the upper, a `strap or shoulder isformed,against which the lower sash is pressed bythe Stop fastener, answeringevery purpose `of the stop strap l generally placed between the sash. Bythis arrangement it will beseen that sash may be"` made to tcloselybetWeen the jambs,`and` yet be put in and `taken out `withperfect ease and facility, as will be hereinafter ITo enable othersskilled in the arts to B) represents the lower and (B) the M upper sash.i

(C) are the stop fasteners which are made in a curved form, as seen inFig. 5, for a v purpose thatwill be hereinafter `described. y f 1 (c)are metallic rings connected with the Y Figure lis aside elevation of awindow stop fasteners by means of a wire, as clearly A is to press thefasteners against the `groove in the side of the jamb.

(f) are offsets one of which is formed in each jamb, as clearly shown inFigs. l and 3. (e) are grooves into which the fasteners take and bypressing against the side of the same, re-act against the sash, bywhichreaction two distinct offices are performed; 1st, they hold thesash in thev frame thus performing the oice of a fastener and; 2nd, theyress the sash rmly against the edge of o set (f) for the purpose ofmaking the joint between the sash and frame air-tight or nearly so, andalso to prevent the window from being shaken by the wind.

from the use of my stop fasteners it is indispensably necessary to forman offset in the jamb as at (f) for without said offset it would benecessary to use the strap which is ordinarily placed between the sashfor the purpose of preventing the bottom of the lower sash from workingoutward. Now if we use a strap between the sash it would y prevent theaccomplishment of the object for which my fastener is intended, from thefact that the back sash could not be taken out unless the stop waspreviously removed. Now'` it will be seen by examining Fig. 3 thatoffset (f) ywill perform `three distinct offices. `lst,.it forms a jambfor the upper sash. 2nd, it substantially forms a stop strapv (i. e.when used incombination with the stop fastener) to hold the upper sashin itsproper place; and 3d,.it forms a shoulder against which the lowersash is pressed and kept in its proper place. It is therefore by theadvantages gained by the use of the ofi;- set jambs (as above set forth)in, combination with the stop fasteners, that I am enabled to takeeither or both of the sash from the frame without previously detachingany part of the fixtures of the same.

The object of making the stop fastener in a curved form is as follows:It will readily be seen that Ythere is a great advantage gained byhaving the fasteners press against the side instead of the bottom of thegroove (e) for by pressing against the side, the sash is kept constantpressed back against the edge of the offsets (if) thereby rendering thejoint air-tight or nearly so. Now it will be seen that this sidepressure could not be obtained without making the stop fastener in acurved form for it would be impossible to operate a straight fastenerdiagonally through the side of the sash against the side of the groove(e), from the fact that the thickness of the ordinary sash will notadmit of such an arrangement.

Operation: To raise or lower the window we have only to slack thepressure of the fasteners against the side of groove (e) by a moderatepull on rings (c). This relieves the sash so that it can be moved up ordown with perfect ease. To take the sash out from the frame it isnecessary to draw the fasteners entirely within the side of the sash, sothat they will not come in contact with the side of the jamb, then takethe sash straight forward out of the frame.

I do not claim operating the stop fasteners by means of spiral springs,as the same function might be performed either by elliptic springs orweights and pulleys, but

What I do claim as my invention and de u sire to secure by LettersPatent isl. The curved form of the stop fasteners constructed in themanner and for the purpose as herein described.

2. I claim the offset in combination with the fasteners foraccomplishment of the object as herein described.

In testimony whereof I have signed my name before two subscribingwitnesses.

DAVID RUSSELL.

Witnesses:

JOHN L. SMITH, O. C. WILLsoN.

